Madonna returns to YouTube in Warner Music web video pact

After nine months of wrangling, Warner Music Group (WMG) has finally agreed to allow its content back on YouTube, becoming the last of the four major record companies to strike a deal with the site. The move means Google's vast video library will now feature original videos by Madonna, R.E.M. and other popular artists.

The agreement marks an end to hostilities between the recording industry and YouTube, which has drawn fire from media companies over copyright infringement ever since Google bought it for $1.65 billion in 2006. The deal also represents something of a vindication for YouTube, a company critics have said could never go legit, let alone make money for Google.